You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am John Clark.

ASSISTANT: Nice to meet you Clark.

USER: I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from IAH to SEA?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to take off on 02/12 and return on 02/14.

ASSISTANT: Sorry for this inconvence, I could not find any flight with your travelling dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Welcome.