You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to go to Boston with my family as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, may I know your trip dates?

USER: My journey dates are 05/20 and 05/22.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are ORD-BOS.

ASSISTANT: May I know your name?

USER: Jacob Anderson here.

ASSISTANT: Sorry, there are no flights available.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.