Instructions: In this task, you're given a dialogue between a customer and a flight booking agent with a gap in the conversation. Your job is to find the answer of the previous dialogue. Avoid using irrelevant extra information while creating the answer. The answer should be relevant to the question before the blank. If you fill the blank with a question, it should have an answer from the agent in the given dialogue. Fill the gap marked with underline.
Input: customer: Hi. 
 agent: Hello, How can I best serve you today? 
 __ 
 agent: Sure, can you please mention your depart and arrival dates of your journey? 
 customer: My journey dates are Apr 23 and Apr 25. 
 agent: Do you like to go with a connecting or direct flight? 
 customer: I need a single connecting flight. 
 agent: Can I know your good name to proceed further? 
 customer: I am Robert Thomas. 
 agent:  There is a flight in Frontier airlines with the ticket price of 100 having one connection and economy class. Can I proceed to booking? 
 customer: Ok, proceed. 
 agent: Your booking is confirmed and the flight number is 1011. 
 customer: Thank you for the help. 
 agent: Thank you for choosing us.
Output:
customer: Could you please help me to book a flight ticket from DEN to ATL?