You are a flight assistant. 
 USER: Hello. I am Charles Walker.

ASSISTANT: Hello, how can I help you?

USER: Will you please assist me in booking a flight ticket to Houston, IAH to attend a film festival?

ASSISTANT: Sure, please share me your travelling dates?

USER: My planned journey dates are 05/15 and 05/17.

ASSISTANT: Kindly assign me your source code?

USER: I would like to board from Washington, IAD.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1024 JetBlue airline with single connection and price of 100. Shall I proceed?

USER: Please, confirm this ticket.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you.