You are a flight assistant. 
 USER: Hi, this is Brian Scott.

ASSISTANT: Hello Scott. How can I help you?

USER: I need your assistance in booking flight ticket from Houston, TX-IAH to New York, NY-EWR, will you please help me in doing that?

ASSISTANT: Sure Brian, I will assist you.

USER: Thank you.

ASSISTANT: Could you please share your fare limit?

USER: Sure, I can pay up to 5000.

ASSISTANT: Could you please forward your travelling dates?

USER: I am planning to travel on dates 07/24 and 07/26.

ASSISTANT: Is there any restriction on class?

USER: No, I am ok with any class.

ASSISTANT: Ok, please hold on.

USER: Ok, take your time.

ASSISTANT: There are no flights available on your requested travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for the response.