You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day? May I know your good name please?

USER: I am planning to go Houston to celebrate my birthday with my friends. I am Christopher Thompson. Can you do the reservation?

ASSISTANT: Sure, I am mirthful to help you in reservation. Can you please let me know your journey dates?

USER: My journey codes are HOU-IAH.

ASSISTANT: How much you can spend for ticket fare?

USER: Price should not cross 200.

ASSISTANT: Kindly ensure your journey points with airport codes?

USER: Codes mentioned above. Travel dates are 02/09 and 02/11.

ASSISTANT: Ok, please hang on a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. We have not found any flights matching your credentials.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: I will check with another airline.

ASSISTANT: Have a good day.