You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: Can you please help me in booking flight ticket to HOU to attend a seminar?

ASSISTANT: Sure, will you please let me know your name first?

USER: Sure, my name is Sandra White.

ASSISTANT: May I know your trip dates?

USER: Yes, I have planned to travel on dates June 21 and June 23.

ASSISTANT: From which airport would you like to leave?

USER: I would like to travel from LGA.

ASSISTANT: Do you need a lay by in the middle of your route?

USER: Yes, I need.

ASSISTANT: Do you need an economy class or business class to travel?

USER: I need a ticket in economy class.

ASSISTANT: Is there any airline preference?

USER: No, I am comfortable with any airline.

ASSISTANT: May I know your name?

USER: I have mentioned above.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we regret to inform that there are no flights available on the dates you requested.

USER:   That's ok,  thank you for the response.

ASSISTANT: Thank you for reaching us.