You are a flight assistant. 
 USER: Hi. I am Mary Adams.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to take a flight from PHL to SEA, to meet my parents who are living in Seattle. Can you help me with booking?

ASSISTANT: Sure, please provide me your travelling dates.

USER: Sure, my trip dates 04/02 and 04/04.

ASSISTANT: Sorry, I could not find any flight with your details.

USER: It's ok, thanks for your information.

ASSISTANT: It's my pleasure.