You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to attend music concert at IAD, can you please help me with booking a flight ticket from HOU?

ASSISTANT: Sure. Can I know your name?

USER: My name is Paul Moore.

ASSISTANT: Thank you. Please let me know your travel dates?

USER: I would like to take off on Nov 5 and return on Nov 7.

ASSISTANT: Sure. Is there any class preference?

USER: No, but I am looking for a connecting flight.

ASSISTANT: Ok, please wait. Let me check.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.