You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am William Campbell, I want to book a flight ticket from IAH to SFO.

ASSISTANT: Sure, may I know the dates?

USER: My travelling dates are 07/13 and 07/15.

ASSISTANT: As per your information there is a flight in Frontier airlines with a fare of 200, can I confirm the ticket?

USER: Yes, please proceed.

ASSISTANT: Ok, the ticket booking is done in 1001 flight number.

USER: Thank you for booking my flight ticket.

ASSISTANT: Welcome.