You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you for the day?

USER: I want to reserve my ticket from LGA to HOU to attend meeting at Houston, can you please help me in booking?

ASSISTANT: Sure, can you please share your journey dates?

USER: Sure, my planned dates of journey are from Jul, 11 to Jul, 13.

ASSISTANT: May I know your name please?

USER: Sure, my name is Donna Roberts.

ASSISTANT: Which class you prefer to travel?

USER: I am ok with any class preference.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: Are there any more specifications?

USER: Not required.

ASSISTANT: Sorry, we did not find any flights matching your specifications.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for approaching us.