You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George White.

ASSISTANT: How can I  help you?

USER: Can you please book a flight ticket from LGA to IAH?

ASSISTANT: Your travelling dates please?

USER: Sure, I need to travel on dates of 02/26 and 02/28.

ASSISTANT: There is a flight with single connection, can I  proceed for booking in 1005 flight it cost you 600?

USER: No, I need the ticket under the budget of 200 only so please once again check with that.

ASSISTANT: I am sorry no flights found in your budget limit.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Than you for choosing us.

USER: Most welcome.