You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Jason Collins. Please book a ticket to Houston, TX - IAH under a fare of 200?

ASSISTANT: Sure, can I have your staring date of journey?

USER: It is on 05/30.

ASSISTANT: Kindly, share your boarding point airport code.

USER: Oakland, CA - OAK is my boarding airport code.

ASSISTANT: May I know when you want to return?

USER: 06/01 is my return date.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, the flight which is available is having fare 300. Shall I proceed?

USER: Sorry, I cannot spend more thatn 200 price.

ASSISTANT: OK. Thank you for approaching us.

USER: Thank you for your time.