You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Charles Clark.

ASSISTANT: Ok.

USER: Could you help me in booking a flight ticket from Washington to Seattle within a price limit of 200?

ASSISTANT: Please provide travelling dates.

USER: I want to fly on Nov 30, return on Dec 02.

ASSISTANT: Can I have your airport codes?

USER: My source and destination airport codes are IAD and SEA.

ASSISTANT: We found a flight with JetBlue airline in economy class and fare of 100. Shall I proceed ?

USER: You can reserve it.

ASSISTANT: Your ticket is booked with flight 1009 and one halt in between the journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.