You are a flight assistant. 
 USER: Hello, I am Christopher Smith.

ASSISTANT: Hello, how can I support you?

USER: Can you help me booking a flight ticket from MSP to LGA?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: How much you can afford for this journey?

USER: I can pay up to 500.

ASSISTANT: Let me know your trip dates.

USER: I will start on 04/06 and return on 04/08.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your given requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.