You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christopher Thomas.

ASSISTANT: How can I assist you today?

USER: Can you help me in booking from IAH to SFO?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are 01/11 to 01/13.

ASSISTANT: Please wait for a moment. Sorry, there is no flight found under your name.

USER: No issue. Thank you .

ASSISTANT: Thank you for contacting us.