You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please reserve a flight ticket from IAH to LGA for my business trip?

ASSISTANT: Sure, can I know the travel dates please?

USER: Thank you for accepting my request, my departure is on Mar 19 and please book my return ticket also no Mar 21.

ASSISTANT: May I know your name please to proceed further?

USER: My name is Cynthia Thomas.

ASSISTANT: Do you have any requirements?

USER: I will prefer normal cost airline for my journey.

ASSISTANT: Could you please provide the departure and return time?

USER: I can manage with any timings.

ASSISTANT: Ok, wait a moment please.

USER: Ok, take your time but try to get a connecting flight for my journey.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Oh! Sad to hear that.

ASSISTANT: Thank you for approaching us.

USER: Thank you for checking.