You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Could you book my ticket in normal-cost airlines?

ASSISTANT: Sure, may I know your airport codes?

USER: I want to travel from DEN to ATL.

ASSISTANT: Let me know your trip dates please?

USER: I am planning to travel on Feb 2 and Feb 4.

ASSISTANT: May I know your good name to proceed further?

USER: Jack Green here.

ASSISTANT: May I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Let me know your departure and arrival timings?

USER: I am comfortable to travel at any time.

ASSISTANT: Please wait until I revert you.

USER: Sure.

ASSISTANT: Sorry, there are no flights running currently with your specified dates to travel.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.