You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Betty Hill here. I need to reserve a ticket from DEN to LAS, can you help me in doing that?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My journey dates are Nov 05 to 07.

ASSISTANT: Do you have any class or time preferences?

USER: I need a connecting flight which returns in morning time.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your booking is done with flight number 1023. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome.