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

ASSISTANT: Hello, Melissa Smith. How may I be at your service?

USER: Can you please book me a ticket with the fare of 5000?

ASSISTANT: Ok. Could you help me with your airport codes?

USER: My airport codes are from IAH to IAD.

ASSISTANT: Let me know your planned dates.

USER: I would like to fly on 11/09 and return on 11/11.

ASSISTANT: There is a flight with 1 connection of price 200 in Frontier airline with 1002 flight.

USER: Ok, please book this ticket.

ASSISTANT: Reservation was done.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.