You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Jeffrey Phillips.

ASSISTANT: Good to know you, Phillips.

USER: I need to attend a conference in San Francisco, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your source and destination airport codes for better searching?

USER: My airport codes are from SEA to SFO.

ASSISTANT: Can you please give me your exact dates of travel?

USER: My travel dates are 02/06 and 02/08.

ASSISTANT: Fine, please be on hold. I will check for the best flight service.

USER: Sure.

ASSISTANT: I'm sorry to inform you that, all flights are reserved on those dates.

USER: No problem, I will try in another airline. Thanks for your information.

ASSISTANT: My pleasure, thank you for using our service.