You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your assistance?.

USER: I am George Mitchell. I want to book a flight ticket to meet my neighbours in Washington, could you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your journey codes?

USER: My source is Phoenix,  AZ - PHX and destination code is DC - IAD.

ASSISTANT: Please share your travelling dates.

USER: I would like to fly on 01/07 and return on 01/09.

ASSISTANT: Kindly wait for a minute.

USER: Sure.

ASSISTANT: We found a flight with number 1000 and Delta as airline. The cost of the ticket is 200.

USER: You can proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.