You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I want to meet my ex-wife, could you book my ticket from PHL to IAH?

ASSISTANT: Sure, may I know your good name please?

USER: Edward Lewis here.

ASSISTANT: On which dates would you like to travel?

USER: My itinerary dates are Jan 20 and Jan 22.

ASSISTANT: Ok, do you need a lay by in between the journey?

USER: I need single lay by in my journey.

ASSISTANT: OK, do you have any other preferences?

USER: No.

ASSISTANT: We found a  Southwest airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: Please book my ticket.

ASSISTANT: Your ticket has been confirmed with flight number 1021.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.