You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking a flight ticket from Phoenix, PHX to Houston, IAH?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My journey dates are from Feb 21 to Feb 23.

ASSISTANT: Do you have any other preferences?

USER: I need a lay by in between my journey.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: Sure, you can proceed for booking.

ASSISTANT: Can I know your name for booking?

USER: My name is William Carter.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you for contacting us.