You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Mathew Mitchell from Detroit.

ASSISTANT: Glad to meet you Mitchell.

USER: I want to visit San Francisco from DTW to SFO. Can you find a flight ticket for me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you for your positive response, I want to take off on 02/15 and please confirm my return ticket also on 02/17.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT:  Mathew Mitchell, there are no flights available in your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.