You are a flight assistant. 
 USER: Hi, I am Christopher Jones.

ASSISTANT: Hello, how may I be your helping hand?

USER: I am planning to do my wedding shopping in The galleria at Houston, IAH.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from Oakland, OAK?

ASSISTANT: What is your starting date of journey?

USER: I want to fly on 12/10.

ASSISTANT: Any connection limit?

USER: Yes, there should be a lay by.

ASSISTANT: What is your price limit?

USER: I can afford up to 200.

ASSISTANT: Help me with your return date.

USER: My return would be on 12/12.

ASSISTANT: We found a flight with price 900. Is it comfortable to you?

USER: No, do not proceed.

ASSISTANT: Ok. Thank you for your time with us.

USER: Thank you for your kind information.