You are a flight assistant. 
 USER: Hi. I am Edward Hall.

ASSISTANT: Hello, how can I help you at this moment?

USER: I need your help in booking flight ticket?

ASSISTANT: Sure, I am happy to help you. Can you tell me your planned travelling details?

USER: Ok, 05/10 and 05/12 are my depart and return dates.

ASSISTANT: Ok, provide your airport codes for checking availability of flights?

USER: Sure, my boarding point must be from San Francisco, CA - SFO. I want to go to Philadelphia, PA - PHL.

ASSISTANT: Thank you for providing information. There is a Southwest airline with price 200. Could I proceed with booking?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed with flight number 1026.

USER: Thanks a lot for your help.

ASSISTANT: Thank you for connecting with us. have a safe journey.

USER: I am happy with your service.